Manifolding typewriter



1. Q. SHERMAN. MANIFOLDING TYPEWRlTER; APPLICATION FILED NOV, 26. 1919.

1922. SHEET 1.

Patented Aug. 22-! E ETS J V912 for 141702121 eys 1. Q..SHERMAN. MANIFOLDING TYPEWRITER. APPLlCATlON FILED NOV, 26. m9.

1,425 997. Patentea u .15,1922;

2 SHEETS-SHEET 2.

OOGOGOO merits in Manifolding oFncE.

JOHN Q. SHERMAN, OF DAYTON, OHIO.

MANIFOLDIN G TYPEWRITER.

Application filed November 26, 1919. Serial To all. whom it may concern:

Be it known that I, JOHN a citizen pf the United States, and a resident of the city of Dayton, in the county of Montgomery and State of Ohio,'have in-' and useful Improvevented certain new Typewriters, of which the following is a full, clear, and exact dewrlter makes up-a patent, to'which'reference which cannot be on thejsame'center asthe, platen, but which scription, reference being had to the accompanying drawings, forming a part of this specification. g

y invention relates to manifolding typewriters, particularly where designed to employ sheets of 'paper having successive holes punched therein, so that an aligned feed of the paper can be accomplished.

In patent granted A. E. E uary 22, 1918, is described an attachment for typewriters, which together with the typemanifolding. machine, wherein among other thing and described a pair of pin bearing Wheels, which engage marginal holes in duplicated strips of paper. The said wheels are located at the opposite side of the printing platen of the typewriter proper, from the paper mounting means, and in this way I am enabled to feed the strips of paper in alignment, all as fully set forth in said is hereby made. am aware that it has been attempted in the past to feed duplicate sheets of paper over a platen by "means of toothed bodies mounted on the platen itself, but the difliculty with such a means of feeding paper, is that it cannot feed a number of, strips in alignment. One reason for this is that,

- in passing around a'revolving platen, which feeds the paper during revolution, the outside sheets. travel on a slightly larger radius than the inside sheets. This results, after a number of feet. of paperihave passed around the platen, in a nus-alignment of; the strips typewriting machine familiar; H, v A It, isthe object of this-.invention to provide with which; I am a pin wheel vfeed for paper which is, mounted at the same time can allow for the difficulties of feedingin vised", in "suchfa form. of mechanis Specification of Letters Patent;

Q. SHERMAN,

jointly to myself and uchenhofer, N 0. 1,254,368 dated J ans there are shown t the parts shownin Fi of paper must take" a path of shown) compensated for, in anyno special feature of perfect registration} that, has I hitherto been impossible, so far as-;I,-a-m ad Patented Aug. 15, 1922. No. 340,922.

Among other features, by which I am enabled to accomplish this, 1s the provision of1 means for fo enabled to'feed the paper in alignment, as I will fully develop hereinafter. he above object and other advanta es to be noted I g paper in alignment.

Figure 2 is a detail front ing the special roller elevation showwhich is provided with for holding the paper my new formof feed down on the pins.-

Figure 3 is a view in diagrammatic form, of a modified method of-attaining the tangential feed heretofore referred to. igure 4 is a detail plan view of a modified form of roller, which'is employed-with re 3.- Figure 5 is a detail front elevation showing the platen pin wheel and guide of my first modification. v

Figure 6'is a detail top plan view of the same parts. a

Figure 7 is a plan view of g of a typewriter, which may .be of any familiar type,=-and strips of roll or rolls, such as the M11 3 or'else' some accepted form of duplicate a ribbon (not No special form of carriage is shown for the typewriter, since; this-forms my invention, but it willbe-under'stood that-the paper willmove Wlthxth folding}attachments.) 3 I I do not, however, wish=to"be limited in' ecarriage, as is customary in mani thisinvention, to? any details o'f'typewrit'er f construction apart from "my novel 3 paper feeding device, which-might form the'par't i of anymtypewriter i-with simple mechanical:

' preferably 1 ever, since modifications that would be apparent to the mechanic, once the principle is explained.

. The platen 4, (Figure 1) has mounted on its ends, or if found desirable on one end only, a toothed feedingmeans comprising sprocket teeth 5 spaced apart the desired distance and shaped for paper feeding.

In order to provide against the paper from passing around the periphery of the platen in a circular path, so that the teeth engage the paper at a time when it is held partially wrapped around the platen, T rovide a guiding means which brings t e paper loosely to the pins, platen.

This guide comprises one curved member 6 mounted over a cross rod 7 of the carriage, and thence running down around beneath the platen, terminating at another cross rod 8 of the carriage in front of the platen. This guide is slotted at 9 to permit clearance for. the teeth on the ends of the platen.

To completethe guide I provide another curved member 10, mounted over a rod 11 of the carriage, and thence running down between the outer guide piece and the platen, to form a curved. passageway through which the strips of paper may loosely pass. This inner plate is slotted at 12, at each side, to permit the teeth of the feeding elements to pass through it, and is continued upwardly to the printing face of and keeps it ofi' of the the platen, and thence continues by means of 35 arms, 10, to a crossrod 13 ofthe carriage so as to leave the printing exposed and still leave a slotted bar over the toothed elements to act as a stripper in removing the paper from the pins. Mounted on the cross rod 13, and springpressed or, weighted. downwardly are' arms 14: carrying a roller -15. This roller is slotted to provide clearance for the pins as at 16 (Figure 2) and rides on disks 17 mounted over the ends of the printing platen, so as to beelevated out of contact with the platen during the feed of the paper, but permitted to assume a position close enough over thereon. If desired, the disks can be provided with notches 18 to let the roller down tight against the platen, at the close of each complete rotation of the platen. l

The amount of curve of the guide for the strips of paper can be regulated within certain limits so as to allow for the desired amount of engagement of the, pins with the paper. The limits must be abided by, howtoo much of a curve will put the paper out of control of the ins. V In operation of this fee ing device, the

paper strips formed with marginal holes,

positioned alike for all strips, are brought- ,stantially loosely .free feeding at its base that the pins to hold the paper or less rigid they are placed with the corresponding holes in line with each other and set over the pins.

The machine is then operated in the usual chine selected approximately on the horizontal plane of the axis of theplaten. During this feed the paper strips are held subagainst the pins by means of the roller 15, and stripped from the pins by means of the arms 10*.

The amount of bend or curve, to increase or decrease the number of pins which will at the same time have engagement with the strips of paper, is regulated by-the guiding elements, and can vary anywhere from a perfectly stralght line-to a line which results in a binding of the strips such that cannot be accomplished. By free feeding I refer to the ability of the paper strips to mutually adjust themselves upon the pins. In the construction of the pins 1, preferably, provide a pin tapering to a blunt point which has a diameter is appreciably smaller than the diameter of the holes in the paper strips. It will be noted use with the preferred form of the invention, have accurately spaced, successive, marginal holes 2 these holes being along both margins where two pin wheels are used and, of course, spaced to correspond to the spacing of the pins. I J

In the printin of strips of paper into forms, it is possi 1e to get a very accurate positioning of a series of marginal holes with relation to the' printed material on the forms but it -iswnot so readily possible to obtain an absolute equality in the length of said. forms due to the tendency of paper to stretch. Oneof the necessary items in to insure the engagement by any one pin that the paper strips 2, for

order with the corresponding holes in a number of superimposed forms is the proportion of the diameter of the pins to the diameter of the holes, which has been noted above. Anothernecessary feature is that the several super-- imposed pieces of paper must be free to adjust themselves on thereby;

In fact, when the ordinary paper, such as is used for this purpose, is under more tension while being fed, it will tear out at the holes if there happens to be inaccuracy.

My guiding means provides for this loose retainin the paperbothcfrom its special con ormation, and from the point of view of its preventing the paper from wrapping partly around the rotating platen and thus binding thereon.

ll accomplish a like function of preventing duplicate stripspfin'arginally punched paper from binding on a platenby omitting the pins while being fed' shown in Figures 3 and 4.

The strips of paper 2 in this modification are led from the paper mounting means over an idler roller 19, lying substantially directly in the plane of the printing line on the platen. A guide plate 20 is mounted on a cross rod 21 of the carriage, and extends upwardly in spaced arms 22 past the printing face of the platen to a cross bar 23 of the carriage. The arms are slotted at 24 to clear the pins.

In the instance of this plate 20 and the analogous plate 10 in the first modification, I may form a tearing edge by an integral or separate plate 25, mounted on the cross rod 23, and spaced apart from the rod, about enough distance to permit the required number of strips of paper to pass through the slot so formed, or any other accepted form of tearing blade could be pro vided.

I have also shown a modified form of roller to keep the paper on the pins, without excessive friction. This roller device comprises two small rollers 26, each mounted by means of arms 27 toa cross rod 28. They are suitably spring-pressed or weighted against cams ordisks 29' on the platen of the machine, to prevent excessive pressure on the paper, and are slotted at 30 to clear the IRS. P Instead of either of the abovev described forms of device for preventing the paper from falling away from the pins," I might provide a mere grooved bar, although this Would not be as'much of an antifrict-ion,

means as a roller, and thus would be by so much, a less efi'ective device.

Should it be desired to have the platen stationary and the pin wheels only, movable, my device would be effective for a proper aligning feed, although the rotary platen is desirable in a typewriting machine for other reasons than feeding the paper. The essential of my invention may be stated in one way as the provision of a toothed feeding means for paper which maintains its engagement with the paper. along the line being printed upon. i

It is also adapted particularly for use with:

of typewriter machine, thereby permitting .a self-aligning feed sprocket wheel or pin wheel being mounted or formed on a normal platen.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 2- i 1. In a typewriting machine, the. combination with a platen, of a toothedrotary feeding elementmounted on an axie'on suba rotary platen form platen substantially guide plate is'not. requislte in such an arrangement, which is paper, and means for guidin mounted at the ends adapted to engage successiveholes in a'plu- I m feeding engagement with the toothed element.

2. In a manifolding' machine, the combination with a rotary platen of toothed feeding means operating on substantially the same axis as the platen, for engaging successive holes in a plurality paper, and means for guiding the paper past the printing point of the platen in a path substantally tangential to said platen and in contact with the toothed means and out of binding contact with each other.

3. In a manifolding machine the combination with a rotary platen, of toothed members mounted at the ends of the platen and operating therewith, to engage in successive holes in a plurality of strips of they paper strips in loose relative condition past the printing point of'the platen in contact with the toothed means and substantially tan; gentially to the platen. v

In a manifolding machine the com bination with arotary platen, of toothed members mounted at the ends of the platen cessive holes ina plurality of strips 'of of strips of,

paper, and means for guiding the paper strips in loose relative condition past the printing point of the platen in contact with the toothed means and out of binding con tact with the platen, comprising, at least, in part a slotted member lying over the toothed elements and means for retaining the paper away from substantial contact with the platen except at the printing point.

5. In a manifolding machine, the combination with a platen and toothed means adapted to engage and retain a plurality of stripsof paper at the printing point on said platen, of a guide for the paper passing around the platen and adapted to permit access of the toothed means'to the paper, said guide being adapted to retain the paper loosely therein. v

6. In a manifolding machine the combination wth' a rotary platen of toothed feeding means thereon for engaging and feeding a plurality of strips of paper having successive holes punched therein and means for retaining the paper loosely on the toothed means, and out of frictional feedingengagement with the platen.

7. In a manifoldingmachine, the'combination with a rotary platen, of feeding pins rality of strips of paper, and a paper guide adapted to lead the paper to theTprinting of the platen andpoint on the platen,-

engaging successive means I feeding contact with the platen,

engagement with the platen.

with said pins'and out of frictional feeding 8. In a manifolding machine, the, combination with a rotary platen, of feeding pins mounted at the ends of the platen and adapted to engage successive holes in a pluwith the toothed means and out of frictional feeding contact with the platen. i

10. In a manifolding machine, the combination with a rotary platen, means on the platen for engaging successive holes in paper to be written upon, and means for retaining the paper in substantially loose feeding contact with the toothed means and out of feeding contact with the platen, said means comprising, at least in part, a pair of interspaced plates to guide the paper to the printing point of thePlaten and stripping means to lift the paper from "toothed means.

11. In a manifolding machine, the combination with a. rotary platen, of toothed at the end'or ends of the platen for engaging successive holes punched in paper to be written upon, and means for retaining the paper in substantiallv loose feeding contact with the toothed means and out of said means comprising at least in parta pair of interspaced plates to guide the paper to the printing point of the platen and stripping means to lift the paper from the toothed means, and an element to keep the paper down on the pins without-"excessive friction until stripped.

12. In a manifolding machine, the combination with a rotary platen,of toothed means at the ends of the platen for engaging successive holes stamped in paper to be and means for retaining the written upon,

paper in substantially loose feeding contact 4 with the toothed means and out of feeding in loose engagement v the printing point on loose relative condi-' of toothedwith the toothed without friction,

contact with the platen, said means comprising at least in part a stripping means lying over the toothed means, and a member outside of the feeding means and adapted to hold the paper down on the pins without friction. t

13. In a manifolding machine, the combination with a rotary platen, of means for feeding a plurality of strips of paper past said platen, said means comprising in part elements for preventingthe paper from engaging any substantial portion of the face of the platen except at the printing a substantially tangential path thereto at said point.

14:- In a manifolding machine, the combination with a rotary platen, means at the end or ends of the platen for engaging successive holesin paper to be written upon, and means paper in substantially loose feeding contact with the toothed means and out of feeding contact with the platen, and imparting a substantially tangential path thereto at said point anda carriage for said platen, said means being mounted on the carriage.

15. In a manifolding machine, the combination with a rotary platen, of toothed point and imparting.

for retaining the of toothed engaging successive holes in paper to be written upon,

and'means for retaining the.

paper in substantially loose feeding contact f means and out of feeding contact with the platen, sa'id means comprising, at least in part, a stripping means lying over the toothed means, and a memberoutside of the feeding means and-adapted to the toothed means hold the paper down on platen, said stripping meansv and member being mounted on the carriage. h 16. In a manifolding niachine', nation with k a rotary platen, means at the end or" ends of the platen for engaging successive holes in paper to be written upo'n',-and means for retaining'the paper in substantially loose feeding contact with the toothed meansv and out of feeding contact with the comprising radial tapered pins having an engaging diameter with the holes in the paper, of substantially less size than the diameterofthe holes.

of toothed and a carriage for said.

the combiplaten, said toothed means 

